I didn't want to taste M&Ms at a birthday party, but my parents made me, and I found out that I liked them. I liked the red and yellow ones, but there were green and black ones too. Green and black were "boy-colors", so they were disgusting, and probably poisonous for girls.
A childhood belief about dangerous food

others believed things like this
- that the green bit of cucumbers was poisonousAnon
- I used to believe that noodles that were dyed different colors such as green had been killed.— Tasha
- I used to believe that if you mixed red, blue, green, and yellow paint you'd get plaid!— Judith Ann
- i used to believe that red yellow and green meant "ready, set, Go!" on traffic lights..— cabagona
- I used to think that girls' anuses were green. I remember thinking that as late as high school.— Jack
- I believed you had to color all the dinosaurs in coloring books green because all the dinosaurs WERE green.— Betty